#include<bits/stdc++.h>
#define ll long long
#define ull unsigned long long
using namespace std;

const int N = 1e6 + 10, INF = 0x3f3f3f3f;

int n, l, r;

void solve()
{
    cin >> n >> l >> r;
    int ans = 0;
    for (int i = 1;i <= n;i++) {
        int x, y;cin >> x >> y;
        if (x <= l && y >= r) ans++;
    }
    cout << ans << '\n';
}

signed main()
{
    // ios::sync_with_stdio(0);
    // cin.tie(0);cout.tie(0);
#define ONLINE_JUDGE
#ifndef ONLINE_JUDGE
    std::istringstream in(R"(5 19 22
17 23
20 23
19 22
0 23
12 20
)");
    std::cin.rdbuf(in.rdbuf());
#endif
    int T = 1;
    //cin>>T;
    for (int i = 1;i <= T;i++) {
        solve();
    }

}